Improvement in molds for stamping-mill shoes



W. HAINSWORTH.

Moms F011 STAMPINGMILL SHOES. 110.182,314. Patented sep1.19,1a7a.

MILIEESES. T/Erllm,

Ny PETERS, PHOT0L|THOGRAFHER, W'ASHINGTON, D. C.

IlUNITED STATES WILLIAM HAINswoETE, or PITtrsBUEe, rENNsYLvANIA.

IMPROVEMENTIN MOLDS FOR STAMPlNG-NIILL SHOYES.

Specification forming part of Letters Patent No. 182,314, datedSeptember 19, 1876 application filed February 2, 1876.

To all whom yt may concern:

`Molds for Casting Stamping-Mill Shoes and Dies; and I do hereby declarethe following to be a full, clear, concise, and exact descriptionthereof, reference being had to the accompanying drawing, making anpartof this specication, in whichlike letters indicating like parts- Figurel is a vertical sectional view of the mold employed, and Fig. 2 is aperspective View; and Fig. 3 is a side view of the shoe cast therein.

.In the casting of shoes for stampingmills a considerable loss isexperienced from the breaking off of the stem at the-place of its`junction with the body of the shoe, caused, probably, by the ununiformshrinkage of the stem and body. I have overcome thisdifiiculty bycasting the body part in a metal mold, and the stem part in a sand mold;and I have further cheapened. and facilitated the manufacture otlsuchshoes, and also of the, dies used in connection therewith, by providingthe mold with a removable bottom, so that the same mold, with only achange of bottom, may be employed in the casting of 'shoes and diesvofditterent lengths.

In the drawing, a, represents the one half of a cast-iron or othersuitable mold, of properA diameter for the casting of the shoe B therein. Its cavity is made long enough for the 'casting therein of thegreatest length ofshoe desired.

In order to ada-pt this mold for the casting of shoes of differentlengths, I employ aremovable metallic bottom, b, supported on` a ledge,a', or in other suitable way. This bottom being removable, its place maybe supplied by other like bottoms of the same diameter, but greater orless vertical thickness, accordingly as a shorter or longer shoe isdesired.

In connection with the cast-metal mold a,

in which thebody part B of the shoe is cast,

I employ a sand mold, d, for the casting of the stem B. This sand moldvis made ig any suitable known way, and is inclosed in a fiask, c, and isprovided with the usual gate c. The casting is done in the ordinary Way.

The removable bottom I also employ'in the casting of dies forstamping-mills as well as shoes.

Such dies and sleeves as are used in the art differ but little indiameter, but differ greatly in length. Hence, with removable and.interchangeable bottoms, all the sizes of dies'and shoes in general usecan be cast with but very few molds.A

I am aware that it is not new to insert a stopper in the upper open endof an in got-mold for the purpose of limiting the length of the ingot tobe made; but such a stopper, even if so arranged in the top of aninvertedpdie-mold, would be impracticable, since the impurities of themetal, rising to thev surface, would accumulate in the working face ofthe die, and injure or spoil it for practical use. Hence the removablepart must be inserted in the bottom, Where it performs a function whichthe stopper in the ingot-mold could not perform, viz., to give the dieor shoe a perfectly1 smooth hard Working face, already finished forimmediate use. I am also aware that stampingshoes have been cast on achill, and hence I make no claim to a chill-faced stamping-shoe; and Iam also aware that a sand mold for the stem has been combined with asolid chillmold for the body of the shoe, and such combination is herebydisclaimed.

I claim herein as my inventionl. In molds for casting shoes and dies forv stamping-millmthe combination, with a metal mold, of interchangeablebottoms, substantially as and for the purposes set forth.

2. The combination of sand mold, met-al mold, and interchangeablebottoms, within or against. which to cast the stem, body', and workingface of the shoe, substantially as set forth.

In testimony whereof I have hereunto set my hand.

WILLIAM HAINswoETH.

VWitnesses:

HENRY G. OVER, J oIIN L.' HULL.

A'IEN'I OFFICE

